The "jewels" in a jeweled movement watch are not the ones that you see on the outside. Polished jewel "bearings" are created for the moving parts inside the watch. If all of the moving parts were "metal on metal", the watch would wear out much sooner. Jeweled movement watches last longer and are able to go longer between maintenance.
Generally they are unless they are electronic watches.
There's a good discussion of jewels in watches here: http://elginwatches.org/help/watch_jewels.html
The numbers of jewels that are referred to in watch movements all depends on the make and manufacture of the watch. Certain companies like Waltham used extra jewels in the mechanisms of their watches, and 19 was referred to as a 19 jewel movement.
The stamped crown with the number 18 under it inside a pocket watch likely indicates that the watch has 18 jewels. Jewels are synthetic rubies used in the movement of watches to reduce friction and improve accuracy. A higher number of jewels generally indicates a higher quality and more precise timepiece.
Jewels are used in watches at friction points. You can get them to a very fine point and they will not wear down like metal. So at a point that a gear will be turning for days and days, they use a jewel. if they used metal the point would soon wear to a round nub. Like the end of a ball point pen. increasing friction, and slowing the watches movement. Decreasing the accuracy of the watches timekeeping ability. Usually the higher amount of jewels in a watch the more accurate. Also more moving pieces. Historically the more jewels the more expensive. That was when all the watch pieces were made by hand, and needed to be very precise. Now that we have CNC and computers making very precise components, that old adage isn't so true. Jewels are used in all watches that have gears and movements in them. Not just Automatic watches. The newer watches that are basically small printed circuits and LED readouts don't have them, because of no moving parts. And I'm not sure if new cheap watches with moving hands, they may have little electric motors. But if it is old, or new and you can see moving gears when you remove the back. It has "Jewels".
Jewels in watch terms are gem bearings that were used within the mechanical assembly inside the watch to reduce friction. Many of the low to medium range watches produced commonly used garnet or quartz. Top quality mechanical watches used Sapphire, Ruby or Diamond bearings as the gems have a lower coefficient than garnet or quartz.
Highwaymen would steal anything of value (money, jewels, watches, etc).
The number of jewels do not correlate to water resistance.
Intruders came in the entry and stoled the jewels and gold
Intruders came in the entry and stoled the jewels and gold
Typically, Gucci watches that do not contain gold or diamonds are in the range of $300-$600. More expensive watches contain precious metals or jewels. These can be sold anywhere from $800-$1500